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linux-stable/fs/squashfs
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Phillip Lougher f26044c83e squashfs: avoid bio_alloc() failure with 1Mbyte blocks 
This is a regression introduced by the patch "migrate from ll_rw_block
usage to BIO".

Bio_alloc() is limited to 256 pages (1 Mbyte).  This can cause a failure
when reading 1 Mbyte block filesystems.  The problem is a datablock can be
fully (or almost uncompressed), requiring 256 pages, but, because blocks
are not aligned to page boundaries, it may require 257 pages to read.

Bio_kmalloc() can handle 1024 pages, and so use this for the edge
condition.

Fixes: 93e72b3c612a ("squashfs: migrate from ll_rw_block usage to BIO")
Reported-by: Nicolas Prochazka <nicolas.prochazka@gmail.com>
Reported-by: Tomoatsu Shimada <shimada@walbrix.com>
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Cc: Philippe Liard <pliard@google.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Adrien Schildknecht <adrien+dev@schischi.me>
Cc: Daniel Rosenberg <drosen@google.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200815035637.15319-1-phillip@squashfs.org.uk
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-21 09:52:53 -07:00
..
block.c
squashfs: avoid bio_alloc() failure with 1Mbyte blocks
2020-08-21 09:52:53 -07:00
cache.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
decompressor_multi_percpu.c
Merge branch 'akpm' (patches from Andrew)
2020-06-02 12:21:36 -07:00
decompressor_multi.c
squashfs: migrate from ll_rw_block usage to BIO
2020-06-02 10:59:05 -07:00
decompressor_single.c
squashfs: migrate from ll_rw_block usage to BIO
2020-06-02 10:59:05 -07:00
decompressor.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
decompressor.h
squashfs: migrate from ll_rw_block usage to BIO
2020-06-02 10:59:05 -07:00
dir.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
export.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
file_cache.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499
2019-06-19 17:09:53 +02:00
file_direct.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499
2019-06-19 17:09:53 +02:00
file.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
fragment.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
id.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
inode.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
Kconfig
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
lz4_wrapper.c
squashfs: migrate from ll_rw_block usage to BIO
2020-06-02 10:59:05 -07:00
lzo_wrapper.c
squashfs: migrate from ll_rw_block usage to BIO
2020-06-02 10:59:05 -07:00
Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
namei.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
page_actor.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499
2019-06-19 17:09:53 +02:00
page_actor.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499
2019-06-19 17:09:53 +02:00
squashfs_fs_i.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
squashfs_fs_sb.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
squashfs_fs.h
Squashfs: Replace zero-length array with flexible-array
2020-06-15 23:08:32 -05:00
squashfs.h
squashfs: migrate from ll_rw_block usage to BIO
2020-06-02 10:59:05 -07:00
super.c
Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-09-19 10:06:57 -07:00
symlink.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
xattr_id.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
xattr.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
xattr.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35
2019-05-24 17:27:11 +02:00
xz_wrapper.c
squashfs: migrate from ll_rw_block usage to BIO
2020-06-02 10:59:05 -07:00
zlib_wrapper.c
squashfs: migrate from ll_rw_block usage to BIO
2020-06-02 10:59:05 -07:00
zstd_wrapper.c
squashfs: migrate from ll_rw_block usage to BIO
2020-06-02 10:59:05 -07:00